Process of treating phosphate rock



Patented July 6, 1926.

UNITED STATES PATEN Nollltawing. Application filed August My invention relates to a process of treating phosphate rock, and has for its object, to provide a process that is simple, efiicient and economic to decompose the phosphate rock to produce a fertilizing material, or if desired, to se regate the chemical compounds composing the final product.

In particular, my invention'contemplates the treatment of phosphate rock with potassium chloride and ammonium sulphate, then treating the mixture in the presence of wadizing rapidly suitable premure.

The reaction will-be facilitated by carrying out the process under heat and pressure, 5 to 10 pounds per square inch being a The resulting will constitute a to product may be dried and fertilizer. If the same is used as such, however, the product T orrics' LOS ANGELES, CALIFORNIA, ASSIGNOR T0 s'rocx- HOLDERS SYNDICATE, or LOS ANGELES,

CALIFORNIA, A CORPORATION OF OALI- rnocnss or TREATING rnosrna'ru noon.

7, 1925.- Serial No..48,876.

may be improved by heating the same to about 300 C. which will cause the calcium chloride to react with the ammonium phosphate, forming ammonium chloride, which is driven radicle of the calcium chloride combining with the hosphate radicle vof the ammonium phosp ate, forming calcium hydrogen phosphate. 7

If desired the ingredients of the mass may be segregated by fractional crystallization or any other preferred method. Various changes may be made in the steps olf in vapor form, the calciumof the process by those skilled in the art, 7

without departing vention, as claimed.

I claim:

process of treating phosphate rock from the spirit of my-in comprislng mixing finely ground phosphate rock, ammonium sulphate and potassium chloride with water in the presence of sulphur dioxide. V

2. A process of treating phosphate rock comprising mixing finely ground phosphate rock, ammonium sulphate and potassium I chloride with water in the presence ofsul-- phur dioxide under heat and pressure;

3. A process of treating phosphate rock comprising mixing finely ground phosphate rock, ammonium sulphate and potassium chloridewith water in the presence of sulphur dioxide, heating the mixture to drive oil water and the chlorine in the form of ammonium chloride.

In testimony whereof I'have name to this specification.

RY BLUMEN BERG, J R.

signed my 

